This project investigated relationships between rock strength, mineralogical variations and petrophysical data. The aim of this project was to provide better assessment of material properties for engineering investigations and data collection was undertaken in conjunction with engineering consultancy GHD. Petrophysical parameters (density, sonic velocity, magnetic susceptibility, porosity and resistivity) were collected from drill core using a GeoTek logging system and bench-scale petrophysical equipment. Mineralogy was estimated from hylogger short wave and thermal infrared imaging prior to destructive testing of the drill core using point-load and UCS techniques. Data were acquired for sandstone and dolerite drill core from the Hobart region. Initial analysis suggested that interpreted mineralogy potentially provided good proxies for rock strength but unfortunately this project was not completed as the student withdrew from the Honours program due to illness.